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6607 add default MAP_FILE symbol to sys/mman.h
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

@@ -136,11 +136,18 @@
 
        MAP_32BIT
                         Map to the lower 32 bits of address space.
 
 
+       MAP_FILE
+                        Map a regular file. This is the default behavior;
+                        specifying this flag is not required. It is provided
+                        for compatibility with other systems and should not be
+                        included in new code.
 
+
+
        The MAP_SHARED and MAP_PRIVATE options describe the disposition of
        write references to the underlying object. If MAP_SHARED is specified,
        write references will change the memory object. If MAP_PRIVATE is
        specified, the initial write reference will create a private copy of
        the memory object page and redirect the mapping to the copy. The

@@ -609,6 +616,6 @@
        msync(3C), plock(3C), sysconf(3C), attributes(5), lf64(5),
        standards(5), null(7D), zero(7D)
 
 
 
-                                 April 9, 2016                         MMAP(2)
+                                August 29, 2016                        MMAP(2)